<script setup lang="ts">
import { onLoad } from '@dcloudio/uni-app'
import { ref, watch } from 'vue'
import { getHotRecommendApi } from '@/services/hot'
import type { hotResult, subTypesItem } from '@/types/hot'

// 热门推荐页 标题和url
const hotMap = [
  { type: '1', title: '特惠推荐', url: '/hot/preference' },
  { type: '2', title: '爆款推荐', url: '/hot/inVogue' },
  { type: '3', title: '一站买全', url: '/hot/oneStop' },
  { type: '4', title: '新鲜好物', url: '/hot/new' },
]

// 小程序获取路由参数直接用defineprops
const query = defineProps<{
  type: string
}>()

// 根据路由找到对应要显示的标题
const current = hotMap.find((v) => v.type == query.type)
// 小程序动态设置标题
uni.setNavigationBarTitle({ title: current!.title })

// 商品列表list
let commodityList = ref<subTypesItem[]>([])
//切换tag
const cxOrXp = ref<number>(0)
//广告图
const banner = ref<string>('')
// 获取商品数据
const getHotRecommendData = async () => {
  let res = await getHotRecommendApi(current!.url)
  banner.value = res.result.bannerPicture
  commodityList.value = res.result.subTypes
}

const isDone = ref(false)

// 滚动触底加载
const scrollOver: UniHelper.ScrollViewOnScrolltolower = async () => {
  const currentList = commodityList.value[cxOrXp.value]

  // 控制页数加载完毕
  if (currentList.goodsItems.page < currentList.goodsItems.pages) {
    // 页码数++
    currentList.goodsItems.page += 10
  } else {
    uni.showToast({
      icon: 'none',
      title: '没有更多了',
    })
    isDone.value = true
    return
  }

  // 获取数据
  let res = await getHotRecommendApi(current!.url, {
    subType: currentList.id,
    pageSize: currentList.goodsItems.pageSize,
    page: currentList.goodsItems.page,
  })

  commodityList.value.forEach((v) => {
    res.result.subTypes.find((item, i) => {
      if (item.id == v.id) {
        if (res.result.subTypes[i].goodsItems) {
          v.goodsItems.items.push(...res.result.subTypes[i].goodsItems.items)
        }
      }
    })
  })
}

onLoad(() => {
  getHotRecommendData()
})
</script>

<template>
  <view class="viewport">
    <!-- 推荐封面图 -->
    <view class="cover">
      <image :src="banner"> </image>
    </view>
    <!-- 推荐选项 -->
    <view class="tabs">
      <text
        v-for="(item, i) in commodityList"
        :key="i"
        class="text"
        :class="cxOrXp == i ? 'active' : ''"
        @click="cxOrXp = i"
        >{{ item.title }}</text
      >
    </view>

    <!-- 推荐列表 -->
    <scroll-view
      scroll-y
      class="scroll-view"
      @scrolltolower="scrollOver"
      v-for="(item, index) in commodityList"
      :key="item.id"
      v-show="index == cxOrXp"
      :lower-threshold="200"
    >
      <view class="goods">
        <navigator
          hover-class="none"
          class="navigator"
          v-for="(goods, i) in item.goodsItems.items"
          :key="i"
          :url="`/pages/goods/goods?id=`"
        >
          <image class="thumb" :src="goods.picture"></image>
          <view class="name ellipsis">{{ goods.name }}</view>
          <view class="price">
            <text class="symbol">¥</text>
            <text class="number">{{ goods.price }}</text>
          </view>
        </navigator>
      </view>
      <view class="loading-text">{{ isDone ? '没有更多了' : '正在加载...' }}</view>
    </scroll-view>
  </view>
</template>

<style lang="scss">
page {
  height: 100%;
  background-color: #f4f4f4;
}

.viewport {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 180rpx 0 0;
  position: relative;
}

.cover {
  width: 750rpx;
  height: 225rpx;
  border-radius: 0 0 40rpx 40rpx;
  overflow: hidden;
  position: absolute;
  left: 0;
  top: 0;
}

.scroll-view {
  flex: 1;
}

.tabs {
  display: flex;
  justify-content: space-evenly;
  height: 100rpx;
  line-height: 90rpx;
  margin: 0 20rpx;
  font-size: 28rpx;
  border-radius: 10rpx;
  box-shadow: 0 4rpx 5rpx rgba(200, 200, 200, 0.3);
  color: #333;
  background-color: #fff;
  position: relative;
  z-index: 9;

  .text {
    margin: 0 20rpx;
    position: relative;
  }

  .active {
    &::after {
      content: '';
      width: 40rpx;
      height: 4rpx;
      transform: translate(-50%);
      background-color: #27ba9b;
      position: absolute;
      left: 50%;
      bottom: 24rpx;
    }
  }
}

.goods {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 0 20rpx 20rpx;

  .navigator {
    width: 345rpx;
    padding: 20rpx;
    margin-top: 20rpx;
    border-radius: 10rpx;
    background-color: #fff;
  }

  .thumb {
    width: 305rpx;
    height: 305rpx;
  }

  .name {
    height: 88rpx;
    font-size: 26rpx;
  }

  .price {
    line-height: 1;
    color: #cf4444;
    font-size: 30rpx;
  }

  .symbol {
    font-size: 70%;
  }

  .decimal {
    font-size: 70%;
  }
}

.loading-text {
  text-align: center;
  font-size: 28rpx;
  color: #666;
  padding: 20rpx 0 50rpx;
}
</style>
